CN204961423U - Special buggy jet pump of arranging of coal seam gas well - Google Patents
Special buggy jet pump of arranging of coal seam gas well Download PDFInfo
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- CN204961423U CN204961423U CN201520653070.7U CN201520653070U CN204961423U CN 204961423 U CN204961423 U CN 204961423U CN 201520653070 U CN201520653070 U CN 201520653070U CN 204961423 U CN204961423 U CN 204961423U
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- high pressure
- urceolus
- rubber seal
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- nozzle
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Abstract
The utility model relates to a special buggy jet pump of arranging of coal seam gas well. Arrange the buggy jet pump and by the joint, connect rubber seal, the inner tube, the throat anemostat, inner tube rubber seal, throat rubber seal, the high pressure nozzle, the urceolus, the sleeve, the high pressure chest, sleeve rubber seal, the leather packing piece, the copper backing, stirring nozzle, the urceolus be connected with the inner tube, the high pressure nozzle forms the liquid flow and says all with connecting the internal channel, the power fluid with return out the liquid stream way and separate by the high pressure chest, guaranteed that coal seam well stratum liquid liquid level remains unchanged, the flow that entrainments stratum liquid that makes the high pressure nozzle keeps equal with the flow of stirring nozzle blowout power fluid. Thereby getting rid of of shaft bottom buggy has been realized to the coal seam in shaft bottom has been protected.
Description
Technical field
The utility model relates to a kind of Jet injector, row's coal dust Jet injector that particularly a kind of coal bed gas well is special.
Background technique
Coal-bed gas exploitation is actually the process of a drainage and step-down gas production.Reduce reservoir pressure by draining, make reservoir pressure lower than the desorption pressures of coal-seam gas, coal-seam gas desorbs from coal hole, in matrix of coal, carry out expanding, then flows into crack in the mode of seepage flow, finally migrates to output ground after pit shaft, forms production capacity.
Coal bed gas well is in water pumping gas production process, and along with the flowing of recovered water, generation is migrated and enters pit shaft by the free coal dust in coal seam and the coal dust that comes off from coal seam.If the pulverized coal particle entering pit shaft is not discharged with production fluid, will shaft bottom be deposited on, if the coal dust be deposited on bottom oil jacket annular space fills up sump hole, then cause the blocking of aerogenesis passage or bury pump, hinder the output of coal-seam gas; If the coal dust entering rod tube annular space in addition can not be discharged in time, deposit under gravity, cause holddown.Creation data according to coal-seam gas company of PetroChina Company Limited. shows, and most workover eration is caused by coal dust, and shaft bottom coal dust is difficult to discharge one of key issue having become obstruction coal-seam gas commercial development, therefore needs the coal dust deposited in shaft bottom to remove.
At present, China's cbm development progressively marches toward the commercialized development stage, how to ensure that coal bed gas well stable high yield is key issue.Coal dust problem is one of principal element of commercially producing of puzzlement coal bed gas well, and the operation of row's coal dust is normally produced most important for recovery coal bed gas field.
Summary of the invention
The purpose of this utility model gets rid of undesirable problem for current coal bed gas well shaft bottom coal dust, devises a kind of coal bed gas well special row's coal dust Jet injector, this device and achieve the discharge of shaft bottom coal dust, and protect the coal seam in shaft bottom.
A kind of coal bed gas well special row's coal dust Jet injector, comprise joint, joint rubber seal, inner core, venturi diffusing tube, inner core rubber seal, high pressure nozzle, urceolus, sleeve, hyperbaric chamber, sleeve rubber seal and stirring nozzle, described inner core is connected with urceolus, one end jointing of urceolus, the other end coupling sleeve of urceolus, joint rubber seal is provided with between urceolus and joint, inner core and urceolus are sealed by inner core rubber seal, the inside of inner core is provided with venturi diffusing tube and high pressure nozzle, high pressure nozzle and venturi diffusing tube form fluid flow paths, one end of high pressure nozzle connects venturi diffusing tube, the other end of high pressure nozzle connects hyperbaric chamber, hyperbaric chamber is positioned at the inner side of sleeve, the outlet end of hyperbaric chamber connects stirring nozzle, urceolus and sleeve are sealed by sleeve rubber seal.
Constitute fluid flow paths between described high pressure nozzle and stirring nozzle, high pressure nozzle, stirring nozzle, hyperbaric chamber and sleeve composition highly pressurised liquid circulation passage, have good sealing.
The inwall of described urceolus distributes three annuluses vertically.
Described sleeve and hyperbaric chamber, by skin gasket seal, increase sealing effect.
Described hyperbaric chamber and stirring nozzle are sealed by copper backing, increase sealing effect.
Be provided with venturi rubber seal between described venturi diffusing tube and urceolus, increase sealing effect.
The beneficial effects of the utility model are; this device can meet the needs of efficient thoroughly row coal dust; avoid kill-job and emptying to the infringement in coal seam; make coal bed gas well can the row's of realization coal dust operation under the prerequisite of no killing well not emptying; there is the advantages such as efficiency is high, cost is low, row's coal dust is thorough, simple to operation; be adapted at coal bed gas field large-scale popularization, coal bed gas well special row's coal dust Jet injector can discharge the coal dust at the bottom of coal bed gas well efficiently, and serves the effect in protection coal seam.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is the cross sectional view of A-A in the utility model;
In upper figure: joint 1, joint rubber seal 2, inner core 3, venturi diffusing tube 4, inner core rubber seal 5, venturi rubber seal 6, high pressure nozzle 7, urceolus 8, sleeve 9, hyperbaric chamber 10, sleeve rubber seal 11, leather packing sheet 12, copper backing 13 and stirring nozzle 14.
Embodiment
1-2 by reference to the accompanying drawings, is further described a kind of coal bed gas well special row's coal dust Jet injector that the utility model is mentioned:
A kind of coal bed gas well special row's coal dust Jet injector, comprise joint 1, joint rubber seal 2, inner core 3, venturi diffusing tube 4, inner core rubber seal 5, high pressure nozzle 7, urceolus 8, sleeve 9, hyperbaric chamber 10, sleeve rubber seal 11 and stirring nozzle 14, described inner core 3 is connected with urceolus 8, one end jointing 1 of urceolus 8, the other end coupling sleeve 9 of urceolus 8, joint rubber seal 2 is provided with between urceolus 8 and joint 1, inner core 3 and urceolus 8 are sealed by inner core rubber seal 5, the inside of inner core 3 is provided with venturi diffusing tube 4 and high pressure nozzle 7, high pressure nozzle 7 and venturi diffusing tube 4 form fluid flow paths, one end of high pressure nozzle 7 connects venturi diffusing tube 4, the other end of high pressure nozzle 7 connects hyperbaric chamber 10, hyperbaric chamber 10 is positioned at the inner side of sleeve 9, the outlet end of hyperbaric chamber 10 connects stirring nozzle 14, urceolus 8 and sleeve 9 are sealed by sleeve rubber seal 11.
Wherein, constitute fluid flow paths between high pressure nozzle 7 and stirring nozzle 14, high pressure nozzle 7, stirring nozzle 14, hyperbaric chamber 10 and sleeve 9 form highly pressurised liquid circulation passage, have good sealing.
Wherein, the inwall of urceolus 8 distributes three annuluses vertically.
Wherein, sleeve 9 and hyperbaric chamber 10 are sealed by leather packing sheet 12, increase sealing effect.
Wherein, hyperbaric chamber 10 and stirring nozzle 14 are sealed by copper backing 13, increase sealing effect.
Wherein, between venturi diffusing tube 4 and urceolus 8, be provided with venturi rubber seal 6, increase sealing effect.
Working principle:
High voltage power liquid from ground three plunger high pressure reciprocating pump is descending by the annulus of concentric tube column, three annuluses distributed vertically by urceolus (8) after arriving Jet injector enter into the annular space that hyperbaric chamber (10) forms with sleeve (9), then are entered in hyperbaric chamber (10) by power fluid entrance.Power fluid is divided into two-way in hyperbaric chamber (10), and a part of high voltage power liquid is by high pressure nozzle (7) ejection at a high speed; Another part high voltage power liquid, through stirring nozzle (14) ejection, impacts shaft bottom, and after stirring coal dust, formation mixed liquid enters into the inside of Jet injector by the formation fluid entrance on urceolus (8), then enters in the mixing chamber of concentric tube through above returning passage.At high pressure nozzle (7) place, dynamicliquid pressure is several leading all changes velocity head into, fluid column ambient pressure is reduced, around it, forms negative pressuren zone, under differential pressure action between bottom pressure and negative pressuren zone, the stratum in mixing chamber is stirred liquid and is entrainmented to trunnion by worked exhaust power fluid.After formation fluid and power fluid mix in trunnion, mixed solution enters venturi diffusing tube (4) along trunnion, and along with the cross-sectional area of venturi diffusing tube (4) increases gradually, velocity head continues to be converted to pressure head, thus can make mixed solution returns on ground.Simultaneously at stirring nozzle (14) place, the total head of power fluid also almost all becomes velocity head, fluid column ambient pressure is reduced, around shaft bottom, forms negative pressuren zone, can avoid the injury to shaft bottom so completely.Mixed coal dust liquid (returning fluid) of taking returns to ground along interior tubing string, along with transferring gradually of negative pressure jet rows coal dust device, completes row's coal dust work of whole coal bed gas well.
Claims (6)
1. coal bed gas well special row's coal dust Jet injector, it is characterized in that: comprise joint (1), joint rubber seal (2), inner core (3), venturi diffusing tube (4), inner core rubber seal (5), high pressure nozzle (7), urceolus (8), sleeve (9), hyperbaric chamber (10), sleeve rubber seal (11) and stirring nozzle (14), described inner core (3) is connected with urceolus (8), one end jointing (1) of urceolus (8), the other end coupling sleeve (9) of urceolus (8), joint rubber seal (2) is provided with between urceolus (8) and joint (1), inner core (3) and urceolus (8) are sealed by inner core rubber seal (5), the inside of inner core (3) is provided with venturi diffusing tube (4) and high pressure nozzle (7), high pressure nozzle (7) and venturi diffusing tube (4) form fluid flow paths, one end of high pressure nozzle (7) connects venturi diffusing tube (4), the other end of high pressure nozzle (7) connects hyperbaric chamber (10), hyperbaric chamber (10) is positioned at the inner side of sleeve (9), the outlet end of hyperbaric chamber (10) connects stirring nozzle (14), urceolus (8) and sleeve (9) are sealed by sleeve rubber seal (11).
2. a kind of coal bed gas well according to claim 1 special row's coal dust Jet injector, it is characterized in that: between described high pressure nozzle (7) and stirring nozzle (14), constitute fluid flow paths, high pressure nozzle (7), stirring nozzle (14), hyperbaric chamber (10) and sleeve (9) composition highly pressurised liquid circulation passage, have good sealing.
3. a kind of coal bed gas well according to claim 1 special row's coal dust Jet injector, is characterized in that: the inwall of described urceolus (8) distributes three annuluses vertically.
4. a kind of coal bed gas well according to claim 1 special row's coal dust Jet injector, is characterized in that: described sleeve (9) and hyperbaric chamber (10) are sealed by leather packing sheet (12).
5. a kind of coal bed gas well according to claim 1 special row's coal dust Jet injector, is characterized in that: described hyperbaric chamber (10) and stirring nozzle (14) are sealed by copper backing (13).
6. a kind of coal bed gas well according to claim 1 special row's coal dust Jet injector, is characterized in that: be provided with venturi rubber seal (6) between venturi diffusing tube (4) and urceolus (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653070.7U CN204961423U (en) | 2015-08-27 | 2015-08-27 | Special buggy jet pump of arranging of coal seam gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653070.7U CN204961423U (en) | 2015-08-27 | 2015-08-27 | Special buggy jet pump of arranging of coal seam gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204961423U true CN204961423U (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520653070.7U Expired - Fee Related CN204961423U (en) | 2015-08-27 | 2015-08-27 | Special buggy jet pump of arranging of coal seam gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204961423U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863826A (en) * | 2019-11-18 | 2020-03-06 | 中海石油气电集团有限责任公司 | Method for determining discharge and mining technological parameters of concentric tube jet pump and application |
| CN111075772A (en) * | 2019-12-23 | 2020-04-28 | 北京中煤矿山工程有限公司 | Reverse circulation jet pump for residual drilling fluid in ground pre-grouting flowback stratum |
-
2015
- 2015-08-27 CN CN201520653070.7U patent/CN204961423U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863826A (en) * | 2019-11-18 | 2020-03-06 | 中海石油气电集团有限责任公司 | Method for determining discharge and mining technological parameters of concentric tube jet pump and application |
| CN110863826B (en) * | 2019-11-18 | 2023-03-14 | 中海石油气电集团有限责任公司 | Method for determining discharge and mining technological parameters of concentric tube jet pump and application |
| CN111075772A (en) * | 2019-12-23 | 2020-04-28 | 北京中煤矿山工程有限公司 | Reverse circulation jet pump for residual drilling fluid in ground pre-grouting flowback stratum |
| CN111075772B (en) * | 2019-12-23 | 2022-02-11 | 北京中煤矿山工程有限公司 | Reverse circulation jet pump for residual drilling fluid in ground pre-grouting flowback stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20160827 |